Why AdSense Doesn’t Accept blog.domain.com or www.domain.com — and How to Get Approval for Your Blogger Site

If you’ve tried to apply for Google AdSense with a Blogger website connected to a custom domain, you might have seen a frustrating error message:

“Only top-level domains can be applied.”

This often happens when you try to use a subdomain such as blog.techcosec.com or even www.techcosec.com. But why does this happen — and how can you get AdSense approval for your Blogger site?

Let’s break it down.

Hosted vs Non-Hosted AdSense Accounts

There are two types of AdSense accounts, and this difference is the key to solving the problem.

1. Hosted AdSense Accounts

Created through Blogger or YouTube.
Approval is granted for a platform-provided domain, such as:
- yourname.blogspot.com
- youtube.com/channel/...
Ads can only run on those hosted platforms unless you upgrade later.

2. Non-Hosted AdSense Accounts

Approval is granted for a custom domain, such as:
- techcosec.com
- www.techcosec.com
Requires a stricter review: you must insert AdSense code manually and have enough original, policy-compliant content.
Once approved, ads can run on any subdomain of that root domain.

Why Your Blogger Custom Domain Is Rejected

blog.techcosec.com → ❌ Not allowed because subdomains cannot be used for AdSense application.
www.techcosec.com → ❌ Also not allowed during the first application, because AdSense requires a non-hosted account for custom domains.

This is why you keep seeing the rejection message.

How to Get AdSense Approval the Right Way

You have two paths depending on your situation:

Option A – Start With Blogger’s Free Domain

Create your site on yourname.blogspot.com.
Apply for AdSense directly from Blogger.
Once approved, you’ll have a hosted AdSense account.
Upgrade the account inside AdSense → Add your custom domain (techcosec.com).
Now you can show ads on both www.techcosec.com and the root domain (if redirected).

Option B – Apply Directly With Your Custom Domain

Set your blog’s custom domain as www.techcosec.com.
Add original content, navigation, About/Contact/Privacy pages, etc.
Sign up for AdSense directly at adsense.google.com.
Insert the HTML AdSense code into your Blogger template.
Wait for manual review. If approved, you’ll have a non-hosted account right away.

Best Practice

For most beginners, Option A (start with Blogspot, then upgrade) is the smoother route, because Blogger auto-integration makes the first approval easier.

But if you already have a strong, content-rich blog on a custom domain, Option B saves time — provided your site meets Google’s stricter requirements.

Final Word

So, to answer the big question:

❌ No, you cannot apply for AdSense directly with blog.domain.com or www.domain.com during your first application.
✅ Yes, once you either:
- Get approved via Blogger’s free domain and upgrade, OR
- Apply directly with your custom domain through a non-hosted AdSense account.

The key is understanding the difference between hosted vs non-hosted AdSense accounts — once you know which path you’re on, getting your Blogger site approved becomes much easier.